feat(config_flow): remote-protocol cert/PIN pairing step + reauth after device hard reset (shared .storage cert paths; ADB step body byte-intact, routes onward when protocol enabled)

custom_components/nvidia_shield/translations/en.json

@@ -14,7 +14,9 @@
           "adb_enabled": "Enable ADB Media Session",
           "adb_store_app_info": "Show App Media Info",
           "adb_host": "ADB Host",
-          "adb_port": "ADB Port"
+          "adb_port": "ADB Port",
+          "protocol_enabled": "Pair with Nvidia Remote Protocol",
+          "protocol_host": "Protocol Host"
         },
         "data_description": {
           "androidtv_entity": "The media_player entity from the Android TV Remote integration.",
@@ -25,20 +27,38 @@
           "adb_enabled": "Use ADB to read what's playing from any app (NewPipe, Spotify, etc.). Requires ADB debugging enabled on the Shield.",
           "adb_store_app_info": "Show title and artist from non-Jellyfin apps. Disable to only show the app name (privacy mode).",
           "adb_host": "Override the ADB host IP. Leave blank to auto-detect from the Android TV entity.",
-          "adb_port": "ADB port number. Default is 5555."
+          "adb_port": "ADB port number. Default is 5555.",
+          "protocol_enabled": "Adds the all-in-one remote-protocol transport (power/availability/app push and volume readout). Adds a PIN pairing step; the Shield shows the code.",
+          "protocol_host": "Override the protocol host IP. Leave blank to auto-detect (same fallback as the ADB host)."
         }
       },
       "adb_pair": {
         "title": "Pair ADB",
         "description": "On the Shield, go to Settings > Developer options and enable Network debugging. Then click Submit. You will see a prompt on the Shield to allow the connection -- approve it. If the connection fails, click Submit to try again."
+      },
+      "protocol_pair": {
+        "title": "Pair Remote Protocol",
+        "description": "The Shield is now showing a pairing code. Enter it here. Click Submit to confirm.",
+        "data": {
+          "pairing_code": "Pairing code shown on the Shield"
+        }
+      },
+      "reauth_confirm": {
+        "title": "Re-pair Nvidia Shield",
+        "description": "The Shield reset to factory settings, so the saved certificate is no longer trusted. A pairing code will be shown on the Shield."
       }
     },
     "error": {
       "adb_failed": "Could not connect via ADB. Make sure Network debugging is enabled on the Shield and you approved the connection prompt. Click Submit to try again.",
-      "adb_no_host": "Could not determine the Shield's IP address. Set the ADB Host field on the previous step."
+      "adb_no_host": "Could not determine the Shield's IP address. Set the ADB Host field on the previous step.",
+      "protocol_no_host": "Could not determine the Shield's IP address. Set the Protocol Host or ADB Host field.",
+      "protocol_invalid_code": "Pairing has not started or the code is empty. Click Submit to retry.",
+      "protocol_pair_failed": "The Shield rejected that pairing code. Click Submit to try again."
     },
     "abort": {
-      "already_configured": "This Shield entity is already configured."
+      "already_configured": "This Shield entity is already configured.",
+      "reauth_successful": "Re-paired successfully.",
+      "reauth_entry_missing": "This entry no longer exists."
     }
   },
   "options": {